Is ICD-10-CM code W03 billable?

No, W03 (Other fall on same level due to collision with another person) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

What chapter does ICD-10-CM code W03 belong to?

W03 belongs to Chapter 20 of the ICD-10-CM tabular list: V00–Y99 (External Causes of Morbidity).

W03Not billable, use a more specific code below

Other fall on same level due to collision with another person

In Slipping, tripping, stumbling and falls (W00-W19), chapter 20: External Causes of Morbidity

3 billable codes under W03: none are a CC or MCC; none map to an HCC.

Instructional notes

Includes: conditions that are coded here

Fall due to non-transport collision with other person

Excludes1: not coded here, use a different code

collision with another person without fall (W51)
crushed or pushed by a crowd or human stampede (W52)
fall involving pedestrian conveyance (V00-V09)
fall due to ice or snow (W00)
fall on same level NOS (W18.30)

Also applies, from Slipping, tripping, stumbling and falls (W00-W19)

These notes sit on W00-W19 and apply to every code under it, including W03.

Excludes1: not coded here, use a different code

assault involving a fall (Y01-Y02)
fall from animal (V80.-)
fall (in) (from) machinery (in operation) (W28-W31)
fall (in) (from) transport vehicle (V01-V99)
intentional self-harm involving a fall (X80-X81)

Excludes2: not included here, code separately if applicable

at risk for fall (history of fall) Z91.81
fall (in) (from) burning building (X00.-)
fall into fire (X00-X04, X08)

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Covers how to report external cause codes (V00-Y99) describing cause, intent, place, activity, and status. They are never principal or first-listed, and reporting is voluntary unless required.

General External Cause Coding Guidelines (page 88)
Place of Occurrence Guideline (page 89)
Activity Code (page 89)
Place of Occurrence, Activity, and Status Codes Used with other External Cause Code (page 89)
If the Reporting Format Limits the Number of External Cause Codes (page 90)
Multiple External Cause Coding Guidelines (page 90)
Child and Adult Abuse Guideline (page 90)
Unknown or Undetermined Intent Guideline (page 91)

Read Section I.C.20 (page 87), 3 more topics

All codes under W03

W03 can't be used on a claim. Pick a billable code below; grey headings group them.

W03 MS-DRGs

This code does not group to an MS-DRG as a principal diagnosis.

Other codes that refer to W03

Notes on these codes point to W03.

V00 Excludes1: fall due to person on foot colliding with another person on foot (W03)
V00-V09 Excludes1: fall due to non-transport collision with other person (W03)
W51 Excludes1: fall due to collision with another person (W03)

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

Falls

Falls can be dangerous at any age. Babies and young children can get hurt falling off furniture or down the stairs. Older children may fall off playground equipment. For older adults, falls can be especially serious. They are at higher risk of falling. They are also more likely to fracture (break) a bone when they fall, especially if they have osteoporosis. A broken bone, especially when it is in a hip, may even lead to disability and a loss of independence for older adults.

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.